<!doctype html>
<html lang="en-us">
    <head>
        <title>whisper.cpp : WASM example</title>

        <style>
            #output {
                width: 100%;
                height: 100%;
                margin: 0 auto;
                margin-top: 10px;
                border-left: 0px;
                border-right: 0px;
                padding-left: 0px;
                padding-right: 0px;
                display: block;
                background-color: black;
                color: white;
                font-size: 10px;
                font-family: 'Lucida Console', Monaco, monospace;
                outline: none;
                white-space: pre;
                overflow-wrap: normal;
                overflow-x: scroll;
            }
        </style>
    </head>
    <body>
        <div id="main-container">
            <b>Minimal <a href="https://github.com/ggerganov/whisper.cpp">whisper.cpp</a> example running fully in the browser</b>

            <br><br>

            Usage instructions:<br>
            <ul>
                <li>Load a ggml model file (you can obtain one from <a href="https://ggml.ggerganov.com/">here</a>, recommended: <b>tiny</b> or <b>base</b>)</li>
                <li>Select audio file to transcribe or record audio from the microphone (sample: <a href="https://whisper.ggerganov.com/jfk.wav">jfk.wav</a>)</li>
                <li>Click on the "Transcribe" button to start the transcription</li>
            </ul>

            Note that the computation is quite heavy and may take a few seconds to complete.<br>
            The transcription results will be displayed in the text area below.<br><br>
            <b>Important:</b>
                <ul>
                    <li>your browser must support WASM SIMD instructions for this to work</li>
                    <li>Firefox cannot load files larger than 256 MB - use Chrome instead</li>
                </ul>

            <b>More examples:</b>
                <a href="https://whisper.ggerganov.com/">main</a> |
                <a href="https://whisper.ggerganov.com/bench">bench</a> |
                <a href="https://whisper.ggerganov.com/stream">stream</a> |
                <a href="https://whisper.ggerganov.com/command">command</a> |
                <a href="https://whisper.ggerganov.com/talk">talk</a> |

            <hr>

            <div id="model">
                Whisper models: <span id="model-whisper-status"></span><br><br>
                <button id="fetch-whisper-tiny-en"  onclick="loadWhisper('tiny.en')">tiny.en (75 MB)</button>
                <button id="fetch-whisper-tiny"     onclick="loadWhisper('tiny')">tiny (75 MB)</button>
                <button id="fetch-whisper-base-en"  onclick="loadWhisper('base.en')">base.en (142 MB)</button>
                <button id="fetch-whisper-base"     onclick="loadWhisper('base')">base (142 MB)</button>
                <button id="fetch-whisper-small-en" onclick="loadWhisper('small.en')">small.en (466 MB)</button>
                <button id="fetch-whisper-small"    onclick="loadWhisper('small')">small (466 MB)</button>
                <input type="file" id="whisper-file" name="file" onchange="loadFile(event, 'whisper.bin')" />
                <br><br>
                Quantized models:<br><br>
                <button id="fetch-whisper-tiny-en-q5_1"   onclick="loadWhisper('tiny-en-q5_1')">tiny.en (Q5_1, 31 MB)</button>
                <button id="fetch-whisper-tiny-q5_1"      onclick="loadWhisper('tiny-q5_1')">tiny (Q5_1, 31 MB)</button>
                <button id="fetch-whisper-base-en-q5_1"   onclick="loadWhisper('base-en-q5_1')">base.en (Q5_1, 57 MB)</button>
                <button id="fetch-whisper-base-q5_1"      onclick="loadWhisper('base-q5_1')">base (Q5_1, 57 MB)</button>
                <button id="fetch-whisper-small-en-q5_1"  onclick="loadWhisper('small-en-q5_1')">small.en (Q5_1, 182 MB)</button>
                <button id="fetch-whisper-small-q5_1"     onclick="loadWhisper('small-q5_1')">small (Q5_1, 182 MB)</button><br>
                <button id="fetch-whisper-medium-en-q5_0" onclick="loadWhisper('medium-en-q5_0')">medium.en (Q5_0, 515 MB)</button>
                <button id="fetch-whisper-medium-q5_0"    onclick="loadWhisper('medium-q5_0')">medium (Q5_0, 515 MB)</button>
                <button id="fetch-whisper-large-q5_0"     onclick="loadWhisper('large-q5_0')">large (Q5_0, 1030 MB)</button>
                <span id="fetch-whisper-progress"></span>
            </div>

            <br>

            <!-- radio button to select between file upload or microphone -->
            <div id="input">
                Input:
                <input type="radio" id="file" name="input" value="file" checked="checked" onchange="changeInput('file')" /> <label for="file">File</label>
                <input type="radio" id="mic" name="input" value="mic" onchange="changeInput('mic')" /> <label for="mic">Microphone</label>
            </div>

            <br>

            <div id="input_file">
                Audio file:
                <input type="file" id="file" name="file" onchange="loadAudio(event)" />
            </div>

            <div id="input_mic" style="display: none;">
                Microphone:
                <button id="start" onclick="startRecording()">Start</button>
                <button id="stop" onclick="stopRecording()" disabled>Stop</button>

                <!-- progress bar to show recording progress -->
                <br><br>
                <div id="progress" style="display: none;">
                    <div id="progress-bar" style="width: 0%; height: 10px; background-color: #4CAF50;"></div>
                    <div id="progress-text">0%</div>
                </div>
            </div>

            <audio controls="controls" id="audio" loop hidden>
                Your browser does not support the &lt;audio&gt; tag.
                <source id="source" src="" type="audio/wav" />
            </audio>

            <hr><br>

            <table>
                <tr>
                    <td>
                        Language:
                        <select id="language" name="language">
                            <option value="en">English</option>
                            <option value="ar">Arabic</option>
                            <option value="hy">Armenian</option>
                            <option value="az">Azerbaijani</option>
                            <option value="eu">Basque</option>
                            <option value="be">Belarusian</option>
                            <option value="bn">Bengali</option>
                            <option value="bg">Bulgarian</option>
                            <option value="ca">Catalan</option>
                            <option value="zh">Chinese</option>
                            <option value="hr">Croatian</option>
                            <option value="cs">Czech</option>
                            <option value="da">Danish</option>
                            <option value="nl">Dutch</option>
                            <option value="en">English</option>
                            <option value="et">Estonian</option>
                            <option value="tl">Filipino</option>
                            <option value="fi">Finnish</option>
                            <option value="fr">French</option>
                            <option value="gl">Galician</option>
                            <option value="ka">Georgian</option>
                            <option value="de">German</option>
                            <option value="el">Greek</option>
                            <option value="gu">Gujarati</option>
                            <option value="iw">Hebrew</option>
                            <option value="hi">Hindi</option>
                            <option value="hu">Hungarian</option>
                            <option value="is">Icelandic</option>
                            <option value="id">Indonesian</option>
                            <option value="ga">Irish</option>
                            <option value="it">Italian</option>
                            <option value="ja">Japanese</option>
                            <option value="kn">Kannada</option>
                            <option value="ko">Korean</option>
                            <option value="la">Latin</option>
                            <option value="lv">Latvian</option>
                            <option value="lt">Lithuanian</option>
                            <option value="mk">Macedonian</option>
                            <option value="ms">Malay</option>
                            <option value="mt">Maltese</option>
                            <option value="no">Norwegian</option>
                            <option value="fa">Persian</option>
                            <option value="pl">Polish</option>
                            <option value="pt">Portuguese</option>
                            <option value="ro">Romanian</option>
                            <option value="ru">Russian</option>
                            <option value="sr">Serbian</option>
                            <option value="sk">Slovak</option>
                            <option value="sl">Slovenian</option>
                            <option value="es">Spanish</option>
                            <option value="sw">Swahili</option>
                            <option value="sv">Swedish</option>
                            <option value="ta">Tamil</option>
                            <option value="te">Telugu</option>
                            <option value="th">Thai</option>
                            <option value="tr">Turkish</option>
                            <option value="uk">Ukrainian</option>
                            <option value="ur">Urdu</option>
                            <option value="vi">Vietnamese</option>
                            <option value="cy">Welsh</option>
                            <option value="yi">Yiddish</option>
                        </select>
                    </td>
                    <!-- Slider to select number of threads between 1 and 16 -->
                    <td>
                        Threads:
                        <input type="range" id="threads" name="threads" min="1" max="16" value="8" onchange="changeThreads(this.value)" />
                        <span id="threads-value">8</span>
                    </td>
                    <td>
                        <button onclick="onProcess(false);">Transcribe</button>
                    </td>
                    <td>
                        <button onclick="onProcess(true);">Translate</button>
                    </td>
                </tr>
            </table>

            <br>

            <!-- textarea with height filling the rest of the page -->
            <textarea id="output" rows="20"></textarea>

            <br><br>

            <div class="cell-version">
                <span>
                    |
                    Build time: <span class="nav-link">@GIT_DATE@</span> |
                    Commit hash: <a class="nav-link" href="https://github.com/ggerganov/whisper.cpp/commit/@GIT_SHA1@">@GIT_SHA1@</a> |
                    Commit subject: <span class="nav-link">@GIT_COMMIT_SUBJECT@</span> |
                    <a class="nav-link" href="https://github.com/ggerganov/whisper.cpp/tree/master/examples/whisper.wasm">Source Code</a> |
                </span>
            </div>
        </div>

        <script type="text/javascript" src="helpers.js"></script>
        <script type='text/javascript'>
            // TODO: convert audio buffer to WAV
            function setAudio(audio) {
                //if (audio) {
                //    // convert to 16-bit PCM
                //    var blob = new Blob([audio], { type: 'audio/wav' });
                //    var url = URL.createObjectURL(blob);
                //    document.getElementById('source').src = url;
                //    document.getElementById('audio').hidden = false;
                //    document.getElementById('audio').loop = false;
                //    document.getElementById('audio').load();
                //} else {
                //    document.getElementById('audio').hidden = true;
                //}
            }

            function changeInput(input) {
                if (input == 'file') {
                    document.getElementById('input_file').style.display = 'block';
                    document.getElementById('input_mic' ).style.display = 'none';
                    document.getElementById('progress'  ).style.display = 'none';
                } else {
                    document.getElementById('input_file').style.display = 'none';
                    document.getElementById('input_mic' ).style.display = 'block';
                    document.getElementById('progress'  ).style.display = 'block';
                }
            }

            var Module = {
                print: printTextarea,
                printErr: printTextarea,
                setStatus: function(text) {
                    printTextarea('js: ' + text);
                },
                monitorRunDependencies: function(left) {
                }
            };

            // web audio context
            var context = null;

            // audio data
            var audio = null;

            // the whisper instance
            var instance = null;
            var model_whisper = '';

            // helper function
            function convertTypedArray(src, type) {
                var buffer = new ArrayBuffer(src.byteLength);
                var baseView = new src.constructor(buffer).set(src);
                return new type(buffer);
            }

            //
            // load model
            //

            let dbVersion = 1
            let dbName    = 'whisper.ggerganov.com';
            let indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB

            function storeFS(fname, buf) {
                // write to WASM file using FS_createDataFile
                // if the file exists, delete it
                try {
                    Module.FS_unlink(fname);
                } catch (e) {
                    // ignore
                }

                Module.FS_createDataFile("/", fname, buf, true, true);

                //model_whisper = fname;

                document.getElementById('model-whisper-status').innerHTML = 'loaded "' + model_whisper + '"!';

                printTextarea('storeFS: stored model: ' + fname + ' size: ' + buf.length);

                document.getElementById('model').innerHTML = 'Model fetched: ' + model_whisper;
            }

            function loadFile(event, fname) {
                var file = event.target.files[0] || null;
                if (file == null) {
                    return;
                }

                printTextarea("loadFile: loading model: " + file.name + ", size: " + file.size + " bytes");
                printTextarea('loadFile: please wait ...');

                var reader = new FileReader();
                reader.onload = function(event) {
                    var buf = new Uint8Array(reader.result);
                    storeFS(fname, buf);
                }
                reader.readAsArrayBuffer(file);

                document.getElementById('fetch-whisper-tiny-en' ).style.display = 'none';
                document.getElementById('fetch-whisper-base-en' ).style.display = 'none';
                document.getElementById('fetch-whisper-small-en').style.display = 'none';
                document.getElementById('fetch-whisper-tiny'    ).style.display = 'none';
                document.getElementById('fetch-whisper-base'    ).style.display = 'none';
                document.getElementById('fetch-whisper-small'   ).style.display = 'none';

                document.getElementById('fetch-whisper-tiny-en-q5_1'  ).style.display = 'none';
                document.getElementById('fetch-whisper-tiny-q5_1'     ).style.display = 'none';
                document.getElementById('fetch-whisper-base-en-q5_1'  ).style.display = 'none';
                document.getElementById('fetch-whisper-base-q5_1'     ).style.display = 'none';
                document.getElementById('fetch-whisper-small-en-q5_1' ).style.display = 'none';
                document.getElementById('fetch-whisper-small-q5_1'    ).style.display = 'none';
                document.getElementById('fetch-whisper-medium-en-q5_0').style.display = 'none';
                document.getElementById('fetch-whisper-medium-q5_0'   ).style.display = 'none';
                document.getElementById('fetch-whisper-large-q5_0'    ).style.display = 'none';

                document.getElementById('whisper-file'          ).style.display = 'none';
                document.getElementById('model-whisper-status'  ).innerHTML = 'loaded model: ' + file.name;
            }

            function loadWhisper(model) {
                let urls = {
                    'tiny.en':  'https://whisper.ggerganov.com/ggml-model-whisper-tiny.en.bin',
                    'tiny':     'https://whisper.ggerganov.com/ggml-model-whisper-tiny.bin',
                    'base.en':  'https://whisper.ggerganov.com/ggml-model-whisper-base.en.bin',
                    'base':     'https://whisper.ggerganov.com/ggml-model-whisper-base.bin',
                    'small.en': 'https://whisper.ggerganov.com/ggml-model-whisper-small.en.bin',
                    'small':    'https://whisper.ggerganov.com/ggml-model-whisper-small.bin',

                    'tiny-en-q5_1':  'https://whisper.ggerganov.com/ggml-model-whisper-tiny.en-q5_1.bin',
                    'tiny-q5_1':     'https://whisper.ggerganov.com/ggml-model-whisper-tiny-q5_1.bin',
                    'base-en-q5_1':  'https://whisper.ggerganov.com/ggml-model-whisper-base.en-q5_1.bin',
                    'base-q5_1':     'https://whisper.ggerganov.com/ggml-model-whisper-base-q5_1.bin',
                    'small-en-q5_1': 'https://whisper.ggerganov.com/ggml-model-whisper-small.en-q5_1.bin',
                    'small-q5_1':    'https://whisper.ggerganov.com/ggml-model-whisper-small-q5_1.bin',
                    'medium-en-q5_0':'https://whisper.ggerganov.com/ggml-model-whisper-medium.en-q5_0.bin',
                    'medium-q5_0':   'https://whisper.ggerganov.com/ggml-model-whisper-medium-q5_0.bin',
                    'large-q5_0':    'https://whisper.ggerganov.com/ggml-model-whisper-large-q5_0.bin',
                };

                let sizes = {
                    'tiny.en':  75,
                    'tiny':     75,
                    'base.en':  142,
                    'base':     142,
                    'small.en': 466,
                    'small':    466,

                    'tiny-en-q5_1':   31,
                    'tiny-q5_1':      31,
                    'base-en-q5_1':   57,
                    'base-q5_1':      57,
                    'small-en-q5_1':  182,
                    'small-q5_1':     182,
                    'medium-en-q5_0': 515,
                    'medium-q5_0':    515,
                    'large-q5_0':     1030,
                };

                let url     = urls[model];
                let dst     = 'whisper.bin';
                let size_mb = sizes[model];

                model_whisper = model;

                document.getElementById('fetch-whisper-tiny-en' ).style.display = 'none';
                document.getElementById('fetch-whisper-base-en' ).style.display = 'none';
                document.getElementById('fetch-whisper-small-en').style.display = 'none';
                document.getElementById('fetch-whisper-tiny'    ).style.display = 'none';
                document.getElementById('fetch-whisper-base'    ).style.display = 'none';
                document.getElementById('fetch-whisper-small'   ).style.display = 'none';

                document.getElementById('fetch-whisper-tiny-en-q5_1'  ).style.display = 'none';
                document.getElementById('fetch-whisper-tiny-q5_1'     ).style.display = 'none';
                document.getElementById('fetch-whisper-base-en-q5_1'  ).style.display = 'none';
                document.getElementById('fetch-whisper-base-q5_1'     ).style.display = 'none';
                document.getElementById('fetch-whisper-small-en-q5_1' ).style.display = 'none';
                document.getElementById('fetch-whisper-small-q5_1'    ).style.display = 'none';
                document.getElementById('fetch-whisper-medium-en-q5_0').style.display = 'none';
                document.getElementById('fetch-whisper-medium-q5_0'   ).style.display = 'none';
                document.getElementById('fetch-whisper-large-q5_0'    ).style.display = 'none';

                document.getElementById('whisper-file'        ).style.display = 'none';
                document.getElementById('model-whisper-status').innerHTML = 'loading model: ' + model;

                cbProgress = function(p) {
                    let el = document.getElementById('fetch-whisper-progress');
                    el.innerHTML = Math.round(100*p) + '%';
                };

                cbCancel = function() {
                    var el;

                    el = document.getElementById('fetch-whisper-tiny-en' ); if (el) el.style.display = 'inline-block';
                    el = document.getElementById('fetch-whisper-base-en' ); if (el) el.style.display = 'inline-block';
                    el = document.getElementById('fetch-whisper-small-en'); if (el) el.style.display = 'inline-block';
                    el = document.getElementById('fetch-whisper-tiny'    ); if (el) el.style.display = 'inline-block';
                    el = document.getElementById('fetch-whisper-base'    ); if (el) el.style.display = 'inline-block';
                    el = document.getElementById('fetch-whisper-small'   ); if (el) el.style.display = 'inline-block';

                    el = document.getElementById('fetch-whisper-tiny-en-q5_1'  ); if (el) el.style.display = 'inline-block';
                    el = document.getElementById('fetch-whisper-tiny-q5_1'     ); if (el) el.style.display = 'inline-block';
                    el = document.getElementById('fetch-whisper-base-en-q5_1'  ); if (el) el.style.display = 'inline-block';
                    el = document.getElementById('fetch-whisper-base-q5_1'     ); if (el) el.style.display = 'inline-block';
                    el = document.getElementById('fetch-whisper-small-en-q5_1' ); if (el) el.style.display = 'inline-block';
                    el = document.getElementById('fetch-whisper-small-q5_1'    ); if (el) el.style.display = 'inline-block';
                    el = document.getElementById('fetch-whisper-medium-en-q5_0'); if (el) el.style.display = 'inline-block';
                    el = document.getElementById('fetch-whisper-medium-q5_0'   ); if (el) el.style.display = 'inline-block';
                    el = document.getElementById('fetch-whisper-large-q5_0'    ); if (el) el.style.display = 'inline-block';

                    el = document.getElementById('whisper-file'        ); if (el) el.style.display = 'inline-block';
                    el = document.getElementById('model-whisper-status'); if (el) el.innerHTML = '';
                };

                loadRemote(url, dst, size_mb, cbProgress, storeFS, cbCancel, printTextarea);
            }

            //
            // audio file
            //

            const kMaxAudio_s = 30*60;
            const kMaxRecording_s = 2*60;
            const kSampleRate = 16000;

            window.AudioContext = window.AudioContext || window.webkitAudioContext;
            window.OfflineAudioContext = window.OfflineAudioContext || window.webkitOfflineAudioContext;

            function loadAudio(event) {
                if (!context) {
                    context = new AudioContext({
                        sampleRate: kSampleRate,
                        channelCount: 1,
                        echoCancellation: false,
                        autoGainControl:  true,
                        noiseSuppression: true,
                    });
                }

                var file = event.target.files[0] || null;
                if (file == null) {
                    return;
                }

                printTextarea('js: loading audio: ' + file.name + ', size: ' + file.size + ' bytes');
                printTextarea('js: please wait ...');

                var reader = new FileReader();
                reader.onload = function(event) {
                    var buf = new Uint8Array(reader.result);

                    context.decodeAudioData(buf.buffer, function(audioBuffer) {
                        var offlineContext = new OfflineAudioContext(audioBuffer.numberOfChannels, audioBuffer.length, audioBuffer.sampleRate);
                        var source = offlineContext.createBufferSource();
                        source.buffer = audioBuffer;
                        source.connect(offlineContext.destination);
                        source.start(0);

                        offlineContext.startRendering().then(function(renderedBuffer) {
                            audio = renderedBuffer.getChannelData(0);
                            printTextarea('js: audio loaded, size: ' + audio.length);

                            // truncate to first 30 seconds
                            if (audio.length > kMaxAudio_s*kSampleRate) {
                                audio = audio.slice(0, kMaxAudio_s*kSampleRate);
                                printTextarea('js: truncated audio to first ' + kMaxAudio_s + ' seconds');
                            }

                            setAudio(audio);
                        });
                    }, function(e) {
                        printTextarea('js: error decoding audio: ' + e);
                        audio = null;
                        setAudio(audio);
                    });
                }
                reader.readAsArrayBuffer(file);
            }

            //
            // microphone
            //

            var mediaRecorder = null;
            var doRecording = false;
            var startTime = 0;

            function stopRecording() {
                doRecording = false;
            }

            // record up to kMaxRecording_s seconds of audio from the microphone
            // check if doRecording is false every 1000 ms and stop recording if so
            // update progress information
            function startRecording() {
                if (!context) {
                    context = new AudioContext({
                        sampleRate: kSampleRate,
                        channelCount: 1,
                        echoCancellation: false,
                        autoGainControl:  true,
                        noiseSuppression: true,
                    });
                }

                document.getElementById('start').disabled = true;
                document.getElementById('stop').disabled = false;

                document.getElementById('progress-bar').style.width = '0%';
                document.getElementById('progress-text').innerHTML = '0%';

                doRecording = true;
                startTime = Date.now();

                var chunks = [];
                var stream = null;

                navigator.mediaDevices.getUserMedia({audio: true, video: false})
                    .then(function(s) {
                        stream = s;
                        mediaRecorder = new MediaRecorder(stream);
                        mediaRecorder.ondataavailable = function(e) {
                            chunks.push(e.data);
                        };
                        mediaRecorder.onstop = function(e) {
                            var blob = new Blob(chunks, { 'type' : 'audio/ogg; codecs=opus' });
                            chunks = [];

                            document.getElementById('start').disabled = false;
                            document.getElementById('stop').disabled = true;

                            var reader = new FileReader();
                            reader.onload = function(event) {
                                var buf = new Uint8Array(reader.result);

                                context.decodeAudioData(buf.buffer, function(audioBuffer) {
                                    var offlineContext = new OfflineAudioContext(audioBuffer.numberOfChannels, audioBuffer.length, audioBuffer.sampleRate);
                                    var source = offlineContext.createBufferSource();
                                    source.buffer = audioBuffer;
                                    source.connect(offlineContext.destination);
                                    source.start(0);

                                    offlineContext.startRendering().then(function(renderedBuffer) {
                                        audio = renderedBuffer.getChannelData(0);
                                        printTextarea('js: audio recorded, size: ' + audio.length);

                                        // truncate to first 30 seconds
                                        if (audio.length > kMaxRecording_s*kSampleRate) {
                                            audio = audio.slice(0, kMaxRecording_s*kSampleRate);
                                            printTextarea('js: truncated audio to first ' + kMaxRecording_s + ' seconds');
                                        }
                                        setAudio(audio);
                                    });
                                }, function(e) {
                                    printTextarea('js: error decoding audio: ' + e);
                                    audio = null;
                                    setAudio(audio);
                                });
                            }

                            reader.readAsArrayBuffer(blob);
                        };
                        mediaRecorder.start();
                    })
                    .catch(function(err) {
                        printTextarea('js: error getting audio stream: ' + err);
                    });

                var interval = setInterval(function() {
                    if (!doRecording) {
                        clearInterval(interval);
                        mediaRecorder.stop();
                        stream.getTracks().forEach(function(track) {
                            track.stop();
                        });
                    }

                    document.getElementById('progress-bar').style.width = (100*(Date.now() - startTime)/1000/kMaxRecording_s) + '%';
                    document.getElementById('progress-text').innerHTML = (100*(Date.now() - startTime)/1000/kMaxRecording_s).toFixed(0) + '%';
                }, 1000);

                printTextarea('js: recording ...');

                setTimeout(function() {
                    if (doRecording) {
                        printTextarea('js: recording stopped after ' + kMaxRecording_s + ' seconds');
                        stopRecording();
                    }
                }, kMaxRecording_s*1000);
            }

            //
            // transcribe
            //

            var nthreads = 8;

            function changeThreads(value) {
                nthreads = value;
                document.getElementById('threads-value').innerHTML = nthreads;
            }

            function onProcess(translate) {
                if (!instance) {
                    instance = Module.init('whisper.bin');

                    if (instance) {
                        printTextarea("js: whisper initialized, instance: " + instance);
                        document.getElementById('model').innerHTML = 'Model loaded: ' + model_whisper;
                    }
                }

                if (!instance) {
                    printTextarea("js: failed to initialize whisper");
                    return;
                }

                if (!audio) {
                    printTextarea("js: no audio data");
                    return;
                }

                if (instance) {
                    printTextarea('');
                    printTextarea('js: processing - this might take a while ...');
                    printTextarea('');

                    setTimeout(function() {
                        var ret = Module.full_default(instance, audio, document.getElementById('language').value, nthreads, translate);
                        console.log('js: full_default returned: ' + ret);
                        if (ret) {
                            printTextarea("js: whisper returned: " + ret);
                        }
                    }, 100);
                }
            }
        </script>
        <script type="text/javascript" src="main.js"></script>
    </body>
</html>
